Found a useful 5 point checklist in the book I'm reading.

Relative Advantage - Being better than the previous solution. How well does the plan show how much better off people will be when they adopt the plan?

Compatability - Consistent with values, experiences and needs: How well does the plan demonstrate that it is compatible with current values, past experiences, and needs?

Complexity - Being difficult to understand and use: How well does the plan provide for easy communication, comprehension and use?

Trialability - May be experimented with on a limited basis: How well does the plan allow for trialability?

Observability: Results are visable to others: How well does the plan provide results that are easily observed and visible to others?

Source: Isaksen, S. and J.Tidd (2006) Meeting the Innovation Challenge: Leadership for Transformation and Growth.